Ammonia
Carbon dioxide
Sulphur dioxide
R-12
D. R-12
Dew point temperature decreases
Wet bulb temperature decreases
Dry bulb temperature increases
All of these
Ammonia
Carbon dioxide
Freon
Brine
Same
Low
Very low
High
Saturated liquid
Wet vapour
Dry saturated vapour
Superheated vapour
Will be higher
Will be lower
Will remain unaffected
May be higher or lower depending upon the nature of noncondensable gases
Remains constant
Increases
Decreases
None of these
(e₁ + e₂)/ e₁ + e₂ - e₁e₂
1/e₁ + 1/e₂
e₁ + e₂
e₁e₂
Ammonia
Carbon dioxide
Sulphur dioxide
R-12
Halide torch
Sulphur sticks
Soap and water
All of these
Equal to
Less than
More than
None of these
1 : 1
1 : 9
9 : 1
1 : 3
5°C
8°C
14°C
22°C
Between the combustion chamber and the first heat exchanger
Between the first heat exchanger and the secondary compressor
Between the secondary compressor and the second heat exchanger
Between the second heat exchanger and the cooling turbine
Compressor
Condenser
Evaporator
Expansion valve
High latent heat of vaporisation and low freezing point
High operating pressures and low freezing point
High specific volume and high latent heat of vaporisation
Low C.O.P. and low freezing point
Reciprocating
Rotating
Centrifugal
Screw
Increases C.O.P
Decreases C.O.P
C.O.P remains unaltered
Other factors decide C.O.P
The mass of water vapour present in 1 m3 of dry air
The mass of water vapour present in 1 kg of dry air
The ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in the same mass of dry air when it is saturated at the same temperature and pressure.
The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour in the same volume of saturated air at the same temperature and pressure
Receiver
Expansion valve
Evaporator
Compressor discharge
Sub-cooling or under-cooling
Super-cooling
Normal cooling
None of these
Humidification
Dehumidification
Heating and humidification
Cooling and dehumidification
Cost is too high
Capacity control is not possible
It is made of copper
Required pressure drop cannot be achieved
Carbon dioxide
Sulphur dioxide
Lithium bromide
R-12
Mean radiant temperature
Effective temperature
Dew point temperature
None of these
Bright green
Yellow
Red
Orange
Reversed Carnot cycle
Bell Coleman cycle
Both (A) and (B)
None of these
Lithium bromide used in vapour absorption cycle is non volatile
Lithium bromide plant can't operate below 0°C
A separator is used in lithium bromide plant to remove the unwanted water vapour by condensing
Concentration of solution coming out of lithium bromide generator is more in comparison to that entering the generator
NN = hl/k
NN = μ cp/k
NN = ρ V l /μ
NN = V²/t.cp
1.86 kW
3.72 kW
7.44 kW
18.6 kW
More
Less
Equally
Unpredictable